Functions
6-108
7SJ63 Manual
C53000-G1140-C120-1
Figure 6-47
Logic Diagram of the Start Inhibit for Motors Function
6.10.2 Programming Settings
General
The motor start blocking function is only in effect and accessible if address
RI6WDUWV
is set to
(QDEOHG
during configuration of protective functions. If the
function is not needed, then
'LVDEOHG
is set. The function can be turned on or off un-
der address
)&7
.
Required Data
Many of the variables needed to calculate the rotor temperature are supplied by the
motor manufacturer. Among these variables are the starting current, the nominal mo-
tor current, the maximum allowable starting time
767$570$;
(address
), the
number of allowable starts from cold conditions, and the number of allowable starts
from warm conditions.
The starting current is entered at address
,6WDUW,027QRP
, expressed as a
multiple of nominal motor current. In contrast, the nominal motor current is entered as
a secondary value, directly in amperes, at address
,02725120,1$/
. The
number of warm starts allowed is entered at address
0$;:$5067$576
and
&2/'²:$50
7(TXDO
66 ACTIVE
%NU&O,0,1
>66 emer.start
21
2))
„1“
)&7
I >
NW)$&725
k
τ
x
τ
I
a
I
b
I
c
>BLOCK 66
I
max
Θ
L
= 0
S Q
R
T
0
&
&
&
T EquaL = 0
Θ
L
(t) Calculator
Θ
L
(t) >
Θ
REST.
0$;:$5067$576
,02725120,1$/
767$570$;
,6WDUW,027QRP
66 TRIP
66 OFF
F# 4827
F# 4826
F# 4824
F# 4823
F# 4822
66 BLOCKED
F# 4825
or
or
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. ElectricalPartManuals
. com
